I am installing Hadoop on some systems. For this I want to format the hard drive for any previous RAID format or any kind of data. I am facing this problem that when I install Redhat 6.2 on these systems it creates a logical volume on the disk and does not let me create ext4 partitions on them. Any idea how do I format all the disk.

I've installed RHEL 6.1 with none of these problems. Not sure why you can't delete the logical volumes, but I suggest not letting the installer do automatic disk configuration. Then you can manually select which disks you want for the root partitions, their sizes, and how you want them formatted. Configure other disks for Hadoop data later, after OS install.

I am installing Hadoop on some systems. For this I want to format the hard drive for any previous RAID format or any kind of data. I am facing this problem that when I install Redhat 6.2 on these systems it creates a logical volume on the disk and does not let me create ext4 partitions on them. Any idea how do I format all the disk.

I used gparted and wiped of every partition disks had. But as soon as I put the OS back it gives me the warning “Disks sdc, sde, sdf, sdi, sdk contain BIOS RAID metadata but are not part of any recognized BIOS RAID sets/ Ignoring disks sdc, sde, sdf, sdi, sdk. It shows me the RAID strips to load OS into and I cant remove them after I load OS since it contains the boot.

Right now trying the dd command over the entire disk to wipe of any data. Hope it works. If you have any better solution pls let me know. Thanks

I've installed RHEL 6.1 with none of these problems. Not sure why you can't delete the logical volumes, but I suggest not letting the installer do automatic disk configuration. Then you can manually select which disks you want for the root partitions, their sizes, and how you want them formatted. Configure other disks for Hadoop data later, after OS install.

I am installing Hadoop on some systems. For this I want to format the hard drive for any previous RAID format or any kind of data. I am facing this problem that when I install Redhat 6.2 on these systems it creates a logical volume on the disk and does not let me create ext4 partitions on them. Any idea how do I format all the disk.

-Rahul

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Shah, Rahul1 2013-02-25, 22:27

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